Apple to launch iPhone trade-in plan

So you have an old iPhone and you want to trade up for the next generation. You may be able to do so soon.

Apple plans to unveil its iPhone trade-in program next month, according to reports.

The program is scheduled to begin in September, sources told AllThingsD. The report said an exact launch date was unclear, but it speculated that the debut would come at the company's Sept. 10 event, where Apple is expected to show off the next generation iPhone.

(Read more: Apple's next iPhone to come Sept. 10)

AllThingsD said Apple did not respond to a request for comment on the trade-in program.